I decided to try this on a test area that I use mainly for tropical milkweed. It’s one of the few areas in my yard that is open enough to plant extra seed.

March 16th I planted the Interseed Mix from Walnut Creek Seeds. I used half the packet and will reserve half in case the first seeding does poorly. I will later on plant my milkweed and hope all the crops will co-exist.

Below is what the cover crop looks like on April 27th.

I next used my trimmer and cut most of plants down to a couple inches high so that I could plant my milkweed. I’m not sure how much the cover crop will recover.

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You can see from the picture below that the cover crop came back dramatically and is growing faster than my milkweed in some places.

One of the aggravations all gardeners have are all the weed seeds that sprout up all over the garden and yard. While you could certainly use a number of weed killers to fight them after they sprout, a better and more organic way is to keep them from sprouting in the first place.

I have used corn gluten meal in the past and it does seem to prevent seeds from sprouting. The other advantage of corn gluten meal is that it is high in nitrogen – about ten percent.

I’ve found the product locally at OK Hatchery in Kirkwood Missouri. Forty pounds is $40. While the big box stores also carry this product it is much more expensive.

Note – while listening to Mike Miller – a St. Louis gardening expert, he recommends putting out pre-emergent weed preventer twice during the year – once during early spring and once in mid-August.

If you’d like to learn more about the benefits of corn gluten meal, check out the link below from Iowa State University.

If it does not rain in 5 days of application, water it in with approximately .25 inches of water. Then leave a drying period after germination.

I generally recommend 20 lbs product per 1000 ft

The material is generally about 10% nitrogen by weight. One hundred pounds has 10 lbs of nitrogen. The nitrogen will release slowly over a 3 to 4 month period after application.

Corn gluten meal will not provide as complete control as synthetics and is likely to cost more. But, it does provide a natural substitute for those who choose not to use synthetic herbicides for pre-emergence weed control.

Today I attend a program done by three experts in the St. Louis gardening community. Below are my notes from their presentations.

Paul Roberts – teacher at Meramec

Does not use fertilizer on the beds at Meramec CC.
(Note – these are not brand new beds, but ones that have been tended for 25 years. I’m sure your new garden soil is not as good.)

Earthworms are good. He even likes moles as they aerate the soil.

Uses tree chips from aroborists every two years as a mulch.

He does not incorporate organic matter into the soil.

He tells of one instance when a person actually had too much organic matter in the soil – 20%.

Recommends chicken manure as a fertilizer if you need fertilizer. Available at Hummerts.

Roy Gross – St. Louis Composting

A lot of soil in the St. Louis area is 1% to 2 % organic matter.

Build organic matter to 5% .

In general, he doesn’t like tilling except in some very new gardens with poor soil.

If your grass needs help in the fall – first aerate – then add 1/2″ Black Gold mulch.

Rain gardens are 30″ deep.

Pat Bellrose – Fahr Greenhouses

Compost is supposed to be turned every 5 to 7 days. If you do that it won’t smell. (My back hurts just thinking about that.)

PH – acidity

Compost has a PH of 9.
STL County water has a PH of 9.5
Most plants like a PH of 6.5 to 7.
My Conclusion – check you soil PH – every year.

Leaf Mold is not true compost.

Pine Bark has a PH of 4.5 to 5

You can use Iron sulfate to change PH quickly to more acid soil.

He uses a soil mix of 2 parts compost, 2 parts pine bark fines, 1 part rice hulls and 4 pounds iron sulfate and 5 pounds gypsum/yard. for his new plants in the greenhouse. No Peat Moss. Plants seed to like it even though the scientific analysis says it shouldn’t be that good.
This is available at St.Louis Composting – SLC-Pro Mix One
You have to buy it in bulk, but could bring in 5 gallon buckets.

I was looking at some impatiens I had in a window box and noticed they were turning yellow. I decided to try an experiment and sprinkle some fertilizer to one side of the container, but not the other. As you can see from the picture, the fertilized side greened up and looks healthy.

From this experiment I decided to fertilize all my plants. This has been a very stressful year on the plants and there’s a good chance we may have another three months of growth.

I generally use a 10-10-10 fertilizer or something similar. The main thing I do after spreading the fertilizer is to go around with a hose and make that the fertilizer is washed off the plants and gets onto the soil.

One of the experiments I’m trying this year is to mix charcoal in with my fertilizer. I’m mixing it at a ratio of 1 to 1, so in essence I’m cutting my fertilizer use by 50%.While the new charcoal will capture some of the fertilizer nutrients over time, I don’t expect any big change since I’m putting this on fairly lightly.

I can always add more fertilizer later in the year if the plants look like they might need some help.

As I transition from outdoors to indoor plants, I’m always looking to improve the system I have for growing indoor plants. There are many indoor fertilizer available and I thought I would show some options.

Always start with a good potting soil which has some fertilizer already in the soil.

That should last for two to four weeks for small containers, but then you’ll need to transition to larger containers or start using a soluble fertilizer.

I have good results using Miracle Gro soluble plant food with micronutrients. I mix a small amount – 1/8 tsp/ gallon when I do my watering.

Osmocote Plus and Dynamite Fertilizer are also two recommended fertilizers which will should last until spring.

I went out to St. Louis Composting yesterday to see if they might have their good compost in bags I could buy. I saw a man with a shovel loading compost into bags which he then put into his car. I realized then that this might be a better option than buying mulch by the bag every year.

For me there are a couple of problems which I need to remember and which might be helpful to you.

Order half a cubic yard at a time – that’s about the maximum amount I can get into the back of my car. They will use a bulldozer to dig out what you want and then dump it for you to load into your car.

Bring along a strong-back worker who can use a shove to put the compost into bags which he can then put into the back of the car.

Buy heavy duty bags. The regular 1.2 mil bags are a bit light for the job. The good bags are a lot more expensive, but you can save then for use next year.

Bring a tarp to put under the bags.

I used the Black Gold Compost as a top layer to dress the garden – it’s wonderful.

If you’ve got a friend with a large pickup truck bed (4′ x 8′), you can get 2 cu yards to fit inside comfortably.